Subsite vs. Website — What's the Difference?

A website that is subordinate to another website and hosted in its entirety under that site's domain name.

A website (also written as web site) is a collection of web pages and related content that is identified by a common domain name and published on at least one web server. Notable examples are wikipedia.org, google.com, and amazon.com.

A set of related web pages located under a single domain name

A set of interconnected webpages, usually including a homepage, generally located on the same server, and prepared and maintained as a collection of information by a person, group, or organization.

(Internet) A collection of interlinked web pages on the World Wide Web that are typically accessible from the same base URL and reside on the same server.